Cornish, ME Radon Mitigation and Testing

Q: What EPA Radon Zone is Cornish in?

Cornish is in York County, EPA Zone 1.

Q: How much does radon mitigation cost in Cornish?

Radon mitigation typically costs between $800 and $2,000. Most standard systems fall in the $1,000-$1,500 range.

York County

EPA Zone 1

Nestled in York County as part of the Portland Metro area, Cornish sits on New England's complex granite bedrock that can produce elevated radon levels. Testing data for zip code 04020 remains sparse, emphasizing the need for homeowners to conduct their own measurements. Maine's geological conditions, combined with the area's mix of historic and modern homes with full basements, make radon testing a wise precaution.

Cornish, ME Radon Mitigation

Professional radon mitigation is the most effective way to permanently lower radon levels and protect your household.

Cornish, ME Radon Testing

Finding qualified radon testing professionals is the first step toward protecting your home.

Cornish Radon Facts

Key details about the radon risk profile for Cornish and the 04020 zip code area.

EPA Radon Zone

Zone 1 — High Risk

County

York County, ME

Zip Code

04020

Predicted Screening Level

> 4.0 pCi/L (Zone 1)

Cornish and the 04020 zip code are located in York County, which has an EPA assigned Radon Zone of 1. A radon zone of 1 predicts an average indoor radon screening level greater than 4 pCi/L. The EPA recommends testing every home regardless of zone classification.

Radon FAQ for Cornish, ME

What EPA Radon Zone is Cornish in?

Cornish and the 04020 zip code are in York County, which has an EPA assigned Radon Zone of 1. A zone of 1 predicts an average indoor radon screening level greater than 4 pCi/L.

How much does radon mitigation cost in Cornish?

Radon mitigation in Cornish typically costs between $800 and $2,000. Most homes with standard basements can be mitigated with a sub-slab depressurization system in the $1,000–$1,500 range. Factors that can increase cost include complex foundations, crawl spaces, or very high radon levels.

Should I test for radon if I'm buying a home in Cornish?

Yes. Radon testing should be part of every home purchase. A short-term radon test is typically included as part of the home inspection process and costs $150–$250. If elevated levels are found, you can negotiate mitigation as part of the sale.

Most Active Radon Markets in Maine

Cities with the most user-submitted radon test data in the state.

City	Avg User Radon Level	Submissions
Rumford	5.67 pCi/L	3
York	8.50 pCi/L	2
Saco	7.50 pCi/L	2
Hampden	4.50 pCi/L	2
Scarborough	14.00 pCi/L	1
Kittery	12.00 pCi/L	1
South Portland	10.00 pCi/L	1
Portland	4.00 pCi/L	1